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View Full Version : FET for a MR03 (GT MOD)


remy
2012.03.26, 02:46 PM
I'd like to change the FET of my MR03 in order to race in GT MOD category. Other drivers told me to put SY4562. Is it a good choice ? Do you know if new FET are better ?

Traveler
2012.03.26, 02:47 PM
I'd like to change the FET of my MR03 in order to race in GT MOD category. Other drivers told me to put SY4562. Is it a good choice ? Do you know if new FET are better ?

I like the stock 3010 FETs for mod. What kind of motor will you be using?

targetingxmod
2012.03.26, 03:01 PM
I'd like to change the FET of my MR03 in order to race in GT MOD category. Other drivers told me to put SY4562. Is it a good choice ? Do you know if new FET are better ?

I am not a racer but i am on this hobby for a while!

The 3010fets are stock fets. (good, but, as always are better one outthere)

4562 fets are aftermarket, wich are indeed better then 3010fets! the 4562 allow for more power motors... t2 ou chillis, remember in 2x2 at least!

8858 are the little advantage over the 4562, in racing every 0.01% counts... know what i mean?

In my yellow hummer Zmod i went nuts with 12 "4562" (2x3+2x3), but with miniz's 2x3 is the maximum, and 2x2 are well enough!

Traveler
2012.03.26, 03:07 PM
Upgraded FETs help in "stock class" racing, like with an 80T or 70T motor, but with mod motor, the 3010s are more than adequate and some will argue are better than the "better" FETs because they allow for a smoother power band.

briankstan
2012.03.26, 03:31 PM
the 2.4 boards have a 2x2 stack on them, just the fets on on both sides of the boards. I'm ruuning a 35T in my pan car on the stock board with the 3010 fets and it's been fine for years. :)

remy
2012.03.26, 05:24 PM
I was not precise enough, I race with 33 turns motor with foam tires on carpet. I've 4562 on my ESC. For the next season of races I'd like to change de FET for better ones (if it's possible)

cowboysir
2012.03.26, 05:37 PM
8858 Fet have a very sharp throttle response for mod based motors. If you can drive an mr03 with layers of 4562's then if you feel you need something more I'd go with 8858's.

My favorite is to layer a set of 8858 over the lower set of 3010's...gives some higher punch without sacrificing too much of the 3010 linear delivery.

color01
2012.03.26, 06:38 PM
I tried out 4562's several years ago and found that they were pretty sharp in their throttle response -- this is a good thing for slow motors, but I'm not a fan of that for Mod where making the car easy to drive is priority #1.

The stock 3010 set on the ASF 2.4GHz boards is actually quite good, and capable of handling most Mod motors with a nice, soft power delivery. The only good reason I had to change them out was that it's a little risky to run the 2x2 3010's, if you're running a hot motor (e.g. 32t or Chili) and you stall the car, you can definitely heat up the FETs enough to destroy them.

So, PN got me to try the AN0113 FETs (a 3x2 stack) in my car. More than sufficient current handling, and the throttle response is still fairly linear... still not quite as soft as the stock 3010 FETs, but very good considering the stack. I might take two of the chips out later as an experiment: a 2x2 AN0113 setup still handles far more current than I'll need but the throttle response will probably be even softer, which will compliment the PN gear diff nicely.

TheSteve
2012.03.26, 07:13 PM
I'd recommend the 4562, as others have said they feel a little less linear then the stock 3010 fets. In my case I just made sure my throttle EPA was perfectly set to just give 100% throttle when my trigger is squeezed all of the way.
At 4.5 volts there are a few fets that have a very slight resistance advantage however at slightly lower voltages I believe the 4562 is better. When your batteries are getting low and you hammer on the throttle you'll be dropping below 4.5 volts.